Prefabricated shelter structure



FIG. 1—is a front view of a prefabricated shelter structure, of my new design;

FIG. 2—is a rear elevational view thereof;

FIG. 3—is a top view thereof;

FIG. 4—is a right side elevational view thereof;

FIG. 5—is a bottom view thereof;

FIG. 6—is a left side elevational view thereof; and,

FIG. 7—is a perspective view thereof. 

I claim the ornamental design for a prefabricated shelter structure, as shown and described. 